C.F.R. » Title 33 » CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY › SUBCHAPTER NN—DEEPWATER PORTS › PART 149—DEEPWATER PORTS: DESIGN, CONSTRUCTION, AND EQUIPMENT › Subpart B—Pollution Prevention Equipment

33 C.F.R. § 149.105

What are the requirements for the overflow and relief valves?

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(a) Each oil and natural gas transfer system (OTS/NGTS) must include a relief valve that, when activated, prevents pressure on any component of the OTS/NGTS from exceeding its maximum rated pressure.

(b) The transfer system overflow or relief valve must not allow a discharge into the sea.